The Ematic Wireless Headphones and Transmitter with FM Radio let you listen to music or video game audio without the restraint of a wire. The transmitter enables you to wirelessly connect the wireless TV headphones to any compatible device, including PCs, MP3 players and more. A microphone built into these MP3 player headphones lets you chat during gaming sessions. These headphones can also pick up FM radio signals. The Ematic Wireless Headphones and Transmitter have an effective range of 90', giving you plenty of room to move around.